1SDA056537R1 ABB E3V800 PR121/P-LSI 800A 4P Fixed Air Circuit Breaker

Why Choose the ABB E3V800 PR121/P-LSI 800A 4P Fixed Air Circuit Breaker?

The ABB E3V800 PR121/P-LSI, order code 1SDA056537R1, is a high-performance SACE Emax air circuit breaker (ACB) designed for protection and switching in demanding low-voltage power distribution systems. As part of the ABB SACE Emax E3 series, this four-pole circuit breaker combines an 800 A current rating with the electronic PR121/P-LSI protection release and high short-circuit performance.

This E3V breaker is supplied in a fixed four-pole configuration with horizontal rear terminals, making it suitable for installation in industrial switchboards and power distribution assemblies. Its PR121/P-LSI electronic release provides long-time, short-time and instantaneous overcurrent protection, helping protect electrical installations against overloads and short circuits.

With a rated uninterrupted current of 800 A, rated operational voltage up to 690 V AC and an ultimate short-circuit breaking capacity of 130 kA at 415 V AC, the E3V800 is engineered for applications requiring exceptionally high fault-current interruption capability. The breaker also provides a rated short-time withstand current of 85 kA for 1 s.

Key Advantages

• High-performance ABB SACE Emax E3V air circuit breaker for low-voltage distribution.
• 800 A rated uninterrupted current for high-current power systems.
• Four-pole fixed configuration for three-phase systems requiring switched neutral protection.
• Electronic PR121/P-LSI overcurrent release for comprehensive circuit protection.
• High 130 kA ultimate breaking capacity at 415 V AC.
• Horizontal rear terminals support practical switchboard busbar connections.
• Designed for dependable protection of industrial installations, transformers and power distribution equipment.

Key Features

• ABB SACE Emax E3V series.
• 800 A rated uninterrupted current (Iu).
• Four-pole circuit-breaker configuration.
• Fixed installation version.
• PR121/P-LSI electronic release.
• LSI protection functions for long-time, short-time and instantaneous protection.
• 690 V AC rated operational voltage.
• 130 kA Icu at 415 V AC.
• 100 kA Ics at 415 V AC.
• 85 kA short-time withstand current for 1 s.
• Horizontal rear terminals.
• Supplied with auxiliary contacts for open/closed circuit-breaker position indication.

High-Performance Protection for Power Distribution

Air circuit breakers such as the ABB SACE Emax E3V provide switching, isolation and overcurrent protection for high-current low-voltage distribution systems. Their high breaking capacity allows them to safely interrupt severe fault currents, helping protect switchboards, cables, transformers and connected electrical equipment.

The PR121/P-LSI electronic release continuously supports protection against overload and short-circuit conditions through long-time, short-time and instantaneous functions. Combined with the E3V performance level and robust fixed construction, this makes the 1SDA056537R1 well suited to critical industrial and infrastructure power-distribution applications.

Typical Applications

• Industrial low-voltage switchboards and distribution panels.
• Main incoming and distribution circuit protection.
• Transformer secondary protection.
• Manufacturing plants and process facilities.
• Commercial and infrastructure power distribution.
• High-current electrical installations with demanding fault levels.